Product details TV compatibility HD TVs Up to 1080p (1920 x 1080) with up-scaling from 720p 4K TVs Up to 2160p at 60fps (3840 x 2160) with upscaling from 720p and 1080p 4K HDR TVs Supports Dolby Vision at 60fps, HDR10/10+ and HLG (Requires TV with HDMI® input. For 4K streaming an HDMI input that supports HDCP 2.2 is required.) Networking 802.11ax dual-band MIMO Wi-Fi® 6 (2.4 GHz / 5 GHz) 10/100 Base-T Ethernet Ports USB 3.0 HDMI 2.1b Ethernet 10/100 Power Audio features Digital stereo over HDMI® DTS Digital Surround™ pass through over HDMI Dolby Atmos® decode via HDMI* (*Requires Dolby Atmos compatible speakers.) Local playback via USB port Remote control Roku Voice Remote Pro (2nd edition) Power consumption Approx 4.5W when streaming 4K video Power input 12V – 1.5A USB media formats Image JPG, PNG, GIF (non-animated) Size 4.9 x 5.0 x 1.0 inches (124.4 x 127.0 x 25.4 mm) Weight 5.9 ounces (167.2 g) Compatibility Bluetooth® streaming Works with Roku Smart Home Works with Apple AirPlay and HomeKit Works with Google Home Works with Alexa What’s in the box Roku Ultra streaming player Roku Voice Remote Pro (2nd edition) USB-C charging cable (for remote) Premium High Speed HDMI® Cable Power adaptor